ADS820_13 Datasheet, PDF (1/20 Pages) Texas Instruments – ANALOG-TO-DIGITAL CONVERTER

ADS820U
ADS820
SBAS037B – DECEMBER 1995 – REVISED FEBRUARY 2005
10-Bit, 20MHz Sampling
ANALOG-TO-DIGITAL CONVERTER
FEATURES
q NO MISSING CODES
q INTERNAL REFERENCE
q LOW DIFFERENTIAL LINEARITY ERROR:
0.2LSB
q LOW POWER: 195mW
q HIGH SNR: 60dB
q WIDEBAND TRACK/HOLD: 65MHz
APPLICATIONS
q SET-TOP BOXES
q CABLE MODEMS
q VIDEO DIGITIZING
q CCD IMAGING
Camcorders
Copiers
Scanners
Security Cameras
q IF AND BASEBAND DIGITIZATION
DESCRIPTION
The ADS820 is a low-power, monolithic 10-bit, 20MHz Ana-
log-to-Digital (A/D) converter utilizing a small geometry CMOS
process. This complete converter includes a 10-bit quantizer
with internal track-and-hold, reference, and a power down
feature. It operates from a single +5V power supply and can
be configured to accept either differential or single-ended
input signals.
The ADS820 employs digital error correction to provide excel-
lent Nyquist differential linearity performance for demanding
imaging applications. Its low distortion, high SNR, and high
oversampling capability give it the extra margin needed for
telecommunications and video applications.
This high performance converter is specified for AC and
DC-performance at a 20MHz sampling rate. The ADS820
is available in an SO-28 package.
CLK
MSBI
OE
Timing
Circuitry
IN
IN
REFT
CM
REFB
T&H
+3.25V
Pipeline
A/D
Error
Correction
Logic
3-State
Outputs
10-Bit
Digital
Data
+1.25V
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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